A new lifting hinge mechanism

Abstract

The utility model belongs to the technical field of protective door, concretely relates to a novel lifting type hinge mechanism, including operation handle, door frame hinge component, door leaf hinge component, lifting load -bearing arm and transmission assembly, door frame hinge component is connected with door frame, door leaf hinge component is connected with door leaf, door frame hinge component is connected with door leaf hinge component, lifting load -bearing arm is connected with door frame hinge component, lifting load -bearing arm is connected with transmission assembly, and transmission assembly is connected with operation handle, the door frame hinge component of the novel lifting type hinge mechanism in the utility model is connected with the door leaf hinge component through the rigid clamping structure of hinge shaft, and the spiral transmission mechanism of cooperation lifting load -bearing arm converts the rotary force of operation handle input into the vertical lifting displacement of door leaf, realizes the seamless link of power transmission, and door leaf moves up and down in the range of hinge shaft, realizes the flexible rotation of door leaf, enhances the adhesion of door leaf and door frame, improves the connecting strength between door leaf and door frame, avoids the looseness of lifting hinge whole.

Description

Technical Field

[0001] This utility model belongs to the field of protective door technology, specifically relating to a novel lifting hinge mechanism. Background Technology

[0002] In the field of civil defense door technology, hinges, as a key component connecting the door leaf and the door frame, directly affect the overall protective effectiveness and ease of use of civil defense doors. Traditional civil defense door hinge designs, such as the type of civil defense door hinge described in CN207004261U, although they achieve the characteristics of simple structure, convenient installation, and low manufacturing cost by reinforcing the hinge body with clamping plates and installing it on the door leaf by welding, still have some limitations in actual use.

[0003] Specifically, traditional air-raid shelter door hinges suffer from the following main problems: First, traditional hinge designs are inadequate in terms of door leaf lifting and sealing. Traditional structures often struggle to achieve effective door leaf lifting, resulting in limited sealing performance between the door leaf and the frame. This is particularly true in air-raid shelter door designs with no or low thresholds; ensuring a tight seal between the door leaf and the frame after closing is a major challenge for traditional hinge designs. Poor sealing performance not only affects the protective effect of the air-raid shelter door but may also create safety hazards during daily use.

[0004] Secondly, traditional hinges also need improvement in terms of connection strength and durability. Although the hinge body is reinforced with clamping plates and other methods, the hinge area is still prone to wear, loosening, or even breakage during long-term use and frequent opening and closing. This not only affects the normal use of the air-raid shelter door but may also increase maintenance and replacement costs. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a novel lifting hinge mechanism that solves the problem of easy loosening of existing air defense door hinges.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel lifting hinge mechanism is provided, including an operating handle, a door frame hinge assembly, a door leaf hinge assembly, a lifting load-bearing arm, and a transmission assembly. The door frame hinge assembly is connected to the door frame, the door leaf hinge assembly is connected to the door leaf, the door frame hinge assembly is connected to the door leaf hinge assembly, the lifting load-bearing arm is connected to the door frame hinge assembly, the lifting load-bearing arm is connected to the transmission assembly, and the transmission assembly is connected to the operating handle.

[0007] The beneficial effects of adopting the above technical solution are as follows: The operating handle in the lifting hinge facilitates the application of force by the operator. Through a simple shaking motion, the energy generated by the shaking motion is transmitted to the lifting support arm via the transmission component, thereby controlling the lifting of the door leaf. This simplifies the operation process and reduces human error through mechanical transmission, ensuring the stability of the door leaf during the lifting process and improving operational efficiency. The door frame hinge assembly is connected to the door frame, providing a reliable support point for the door leaf. The door leaf hinge assembly is connected to the door leaf, and through connection and cooperation with the door frame hinge assembly, it allows the door leaf to move up and down within the hinge axis limit range. This not only achieves flexible rotation of the door leaf but also enhances the fit between the door leaf and the door frame, improves the connection strength between the door leaf and the door frame, and prevents the overall lifting hinge from loosening. The lifting support arm installed on the door leaf converts the rotary input into the lifting displacement of the door leaf through the principle of a screw jack. Its connection structure with the door frame assembly ensures the stability of the door leaf during the lifting process and enhances the sealing pressure when the door leaf is closed, effectively preventing damage to the door leaf from external impacts.

[0008] Furthermore, the door frame hinge assembly includes a first fixed base plate, on which a first fixed upright plate and a second fixed upright plate are provided, and the first fixed upright plate and the second fixed upright plate are symmetrically arranged.

[0009] The beneficial effects of adopting the above technical solution are as follows: the door frame hinge assembly forms a stable support structure by setting a first fixed base plate and symmetrically arranged first and second fixed upright plates, which effectively enhances the connection strength between the hinge and the door frame, prevents the hinge from loosening due to uneven force or long-term vibration during use, and improves the overall stability and sealing performance of the air defense door.

[0010] Furthermore, the door hinge assembly includes a second fixed base plate, on which a third fixed upright plate is provided, and the third fixed upright plate is interconnected with the first and second fixed upright plates via hinge pins.

[0011] The beneficial effects of adopting the above technical solution are as follows: the door leaf hinge assembly, by setting a second fixed base plate and a third fixed upright plate, and connecting with the first fixed upright plate and the second fixed upright plate of the door frame hinge assembly through a hinge shaft, forms a stable and flexible rotation structure. This not only ensures that the door leaf can rotate smoothly around the hinge shaft to realize the opening and closing functions, but also effectively prevents the hinge assembly from loosening through the fastening effect of the hinge shaft, thereby improving the overall reliability and service life of the blast door.

[0012] Furthermore, the transmission assembly includes a commutator, the input shaft of which is connected to the operating handle, the output shaft of which is connected to one end of the transmission rod, the other end of which is connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to the input end of the lifting arm.

[0013] The beneficial effects of adopting the above technical solution are as follows: the transmission component transmits the rotational force of the operating handle to the transmission rod through the reversing device, and then inputs it to the lifting load-bearing arm after the transmission shaft changes direction, forming a stable and reliable mechanical linkage structure. This not only ensures the smooth transmission of torque during manual operation, but also eliminates the risk of loosening caused by long-term stress or vibration of traditional hinges through rigid connection. At the same time, the synergistic effect of the reversing device and the transmission shaft ensures the continuity of force and the accuracy of direction during the lifting of the door leaf.

[0014] Furthermore, the lifting support arm is mounted on the door leaf via a support arm base. The support arm base is provided with a first bearing seat and a second bearing seat. A rotary shaft is provided between the first bearing seat and the second bearing seat. A threaded rod is provided at one end of the rotary shaft. A screw nut that meshes with the threaded rod is provided on the outside of the threaded rod. A copper sleeve is provided between the screw nut and the second bearing seat. A first gear is provided on the rotary shaft. The first gear meshes with the second gear. The second gear is located at the output end of the transmission shaft.

[0015] The beneficial effects of adopting the above technical solution are as follows: the lifting load-bearing arm is firmly installed on the door leaf through the load-bearing arm base. The helical transmission mechanism composed of the rotating shaft, threaded rod, and screw nut converts the rotational force output by the transmission shaft into the vertical lifting displacement of the door leaf. At the same time, the copper sleeve reduces friction loss, and the meshing of the first gear and the second gear ensures the continuity and accuracy of power transmission. The overall structure effectively eliminates the loosening problem caused by the force dispersion or transmission gap of traditional hinges through rigid connection and gear transmission, thereby improving the stability and reliability of the lifting process of the air defense door.

[0016] Furthermore, a copper plate and a partition are provided between the threaded rod and the hinge shaft, with the copper plate positioned above the partition.

[0017] The beneficial effects of adopting the above technical solution are as follows: a copper plate and a partition are set between the threaded rod and the hinge shaft. The high wear resistance of the partition reduces the friction loss of direct metal contact. At the same time, the partition forms a stable layered support, effectively dispersing the local stress when the hinge is under force, preventing the connection from loosening due to long-term vibration or impact, thereby improving the overall structural stability and service life of the lifting hinge.

[0018] In summary, the novel lifting hinge mechanism provided by this utility model has the following beneficial effects: This lifting hinge integrates an operating handle, door frame hinge assembly, door leaf hinge assembly, lifting support arm, and transmission assembly to form a stable linkage structure. The door frame hinge assembly, acting as a support unit, forms a stable frame through a rigid connection with the door frame. Its symmetrically arranged first and second fixed uprights enhance resistance to lateral forces, preventing deformation and loosening due to external impacts. The door leaf hinge assembly connects to the hinge shaft of the door frame hinge assembly via a third fixed upright, forming a double-upper-plate clamping structure. This ensures the flexibility of door leaf rotation and eliminates the gaps easily generated by single-point connections in traditional blast doors, improving performance. The system enhances vibration resistance. The base of the lifting arm fits tightly against the door leaf, and through a slewing bearing formed by the first and second bearing seats, the rotational force input from the transmission assembly is converted into the vertical lifting displacement of the door leaf. Simultaneously, the engagement of the threaded rod and screw nut in the transmission assembly achieves smooth torque transmission and a self-locking function, preventing swaying or slippage during door lifting. The transmission assembly, connected to the operating handle via a reversing device, transmits manual operating force to the lifting arm, ensuring the continuity and accuracy of force transmission, thereby improving the connection strength and operational stability of the air-raid shelter door hinges. Attached Figure Description

[0019] Figure 1 This is a front view of the present invention; Figure 2 This is a schematic diagram of the structure of the door frame hinge assembly and the door leaf hinge assembly in this utility model; Figure 3 This is a cross-sectional view of the lifting load-bearing arm in this utility model; The components include: 1. Lifting hinge mechanism; 11. Door frame hinge assembly; 111. First fixed base plate; 112. First fixed upright plate; 113. Second fixed upright plate; 12. Door leaf hinge assembly; 121. Second fixed base plate; 122. Third fixed upright plate; 123. Hinge shaft; 13. Lifting load-bearing arm; 131. Load-bearing arm base; 132. First bearing seat; 133. Second bearing seat; 134. Rotary shaft; 135. Threaded rod; 136. Copper sleeve; 137. Lead screw nut; 138. First gear; 139. Copper plate; 1310. Partition plate; 1311. Second gear; 14. Transmission assembly; 141. Reversing device; 142. Transmission rod; 143. Transmission shaft; 15. Operating handle. Detailed Implementation

[0020] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0021] like Figures 1-3 As shown, the novel lifting hinge mechanism provided by this utility model includes an operating handle 15, a door frame hinge assembly 11, a door leaf hinge assembly 12, a lifting load-bearing arm 13, and a transmission assembly 14. The door frame hinge assembly 11 is connected to the door frame, the door leaf hinge assembly 12 is connected to the door leaf, the door frame hinge assembly 11 is connected to the door leaf hinge assembly 12, the lifting load-bearing arm 13 is connected to the door frame hinge assembly 11, the lifting load-bearing arm 13 is connected to the transmission assembly 14, and the transmission assembly 14 is connected to the operating handle 15.

[0022] The operating handle 15 in this lifting hinge facilitates the application of force by the operator. A simple cranking motion transmits the energy generated by the cranking motion to the lifting support arm 13 via the transmission component 14, thus controlling the lifting of the door leaf. This simplifies the operation process and reduces human error through mechanical transmission, ensuring the stability of the door leaf during lifting and lowering, and improving operational efficiency. The door frame hinge assembly 11 connects to the door frame, providing a reliable support point for the door leaf. The door leaf hinge assembly 12 connects to the door leaf, and through the connection with the door frame hinge assembly 11... When used together, the door leaf is allowed to move up and down within the range limited by the hinge 123. This not only enables flexible rotation of the door leaf but also enhances the fit between the door leaf and the door frame, improves the connection strength between the door leaf and the door frame, and prevents the overall lifting hinge from loosening. The lifting load-bearing arm 13 installed on the door leaf converts the rotary input into the lifting displacement of the door leaf through the principle of a screw jack. Its connection structure with the door frame assembly ensures the stability of the door leaf during the lifting process and enhances the sealing pressure when the door leaf is closed, effectively preventing damage to the door leaf from external impacts.

[0023] like Figure 2 As shown, the door frame hinge assembly 11 includes a first fixed base plate 111, on which a first fixed upright plate 112 and a second fixed upright plate 113 are disposed, symmetrically arranged. By setting the first fixed base plate 111 and the symmetrically arranged first and second fixed upright plates 112 and 113, the door frame hinge assembly 11 forms a stable support structure, effectively enhancing the connection strength between the hinge and the door frame, preventing loosening of the hinge due to uneven force or long-term vibration during use, and improving the overall stability and sealing performance of the door.

[0024] like Figure 2 As shown, the door hinge assembly 12 includes a second fixed base plate 121, on which a third fixed upright plate 122 is mounted. The third fixed upright plate 122 is connected to the first fixed upright plate 112 and the second fixed upright plate 113 via a hinge shaft 123. By using the second fixed base plate 121 and the third fixed upright plate 122, and connecting them to the first fixed upright plate 112 and the second fixed upright plate 113 of the door frame hinge assembly 11 via the hinge shaft 123, a stable and flexible rotation structure is formed. This not only ensures that the door can rotate smoothly around the hinge shaft 123 to achieve opening and closing functions, but also effectively prevents the hinge assembly from loosening through the fastening effect of the hinge shaft 123, thus improving the overall reliability and service life of the blast door.

[0025] like Figure 1 As shown, the transmission assembly 14 includes a commutator 141. One end of the commutator 141 is connected to the operating handle 15, and the other end is connected to one end of the transmission rod 142. The other end of the transmission rod 142 is connected to one end of the transmission shaft 143, and the other end of the transmission shaft 143 is connected to the input end of the lifting arm 13. The transmission assembly 14 transmits the rotational force of the operating handle 15 to the transmission rod 142 through the commutator 141, and then inputs it to the lifting arm 13 after the transmission shaft 143 changes direction, forming a stable and reliable mechanical linkage structure. This ensures the smooth transmission of torque during manual operation and eliminates the risk of loosening caused by long-term stress or vibration of traditional hinges through rigid connection. At the same time, the synergistic effect of the commutator 141 and the transmission shaft 143 ensures the continuity of force and the accuracy of direction during the lifting of the door.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the lifting support arm 13 is mounted on the door leaf via the support arm base 131. The support arm base 131 is provided with a first bearing seat 132 and a second bearing seat 133. A rotary shaft 134 is provided between the first bearing seat 132 and the second bearing seat 133. A threaded rod 135 is provided at one end of the rotary shaft 134. A copper plate 139 and a partition plate 1310 are provided between the threaded rod 135 and the hinge shaft 123. The copper plate 139 is located above the partition plate 1310. A screw nut 137 is provided on the outside of the threaded rod 135 and meshes with it. A copper sleeve 136 is provided between the screw nut 137 and the second bearing seat 133. A first gear 138 is provided on the rotary shaft 134. The first gear 138 meshes with the second gear 1311. The second gear 1311 is located at the output end of the transmission shaft 143. The lifting support arm 13 is securely installed on the door leaf via the support arm base 131. The rotating shaft 134, threaded rod 135, and screw nut 137 form a spiral transmission mechanism, which converts the rotating wheel output from the transmission shaft 143 into the vertical lifting displacement of the door leaf. At the same time, the copper sleeve 136 reduces friction loss, and the meshing of the first gear 138 and the second gear 1311 ensures the continuity and accuracy of power transmission. The overall structure effectively eliminates the loosening problem caused by the force distribution or transmission gap of traditional hinges through rigid connection and gear transmission, thereby improving the stability and reliability of the lifting process of the air defense door.

[0027] The novel lifting hinge mechanism of this utility model is used as follows: When in use, the operator inputs power by rotating the operating handle 15. After the direction is changed by the reversing device 141 in the transmission assembly 14, the power is transmitted to the input end of the lifting load-bearing arm 13 through the transmission rod 142 and the transmission shaft 143. The lifting load-bearing arm 13 is fixed to the door leaf through the load-bearing arm base 131. The rotating shaft 134 inside the lifting load-bearing arm 13 rotates under the drive of the transmission shaft 143, which drives the threaded rod 135 to mesh with the screw nut 137, converting the rotational force into the vertical lifting displacement of the door leaf. The door frame hinge assembly 11 serves as a fixed base and is connected to the door frame through the first fixed base plate 111. The first fixed upright plate 112 and the second fixed upright plate 113 symmetrically arranged on the first fixed base plate 111 and the third fixed upright plate 122 of the door leaf hinge assembly 12 form a double upright plate clamping structure through the hinge shaft 123. This ensures the flexibility of the door leaf rotation and eliminates the gap of the traditional single-point connection through the fastening of the hinge shaft 123. When the door needs to be opened, the operating handle 15 is rotated in the opposite direction, and the transmission component 14 drives the lifting mechanism to move in the opposite direction in a proportional manner, so that the door can rise smoothly. When the door needs to be closed, the operating handle 15 is rotated in the forward direction, so that the door can fall to fit against the door frame. At this time, the door hinge assembly 12 is connected to the hinge shaft 123 of the door frame hinge assembly 11 to ensure that the door returns to its precise position. The lifting load-bearing arm 13 maintains the door's sealed state through the self-locking function.

[0028] In summary, the door frame hinge assembly 11 and door leaf hinge assembly 12 in the novel lifting hinge mechanism provided by this utility model form a rigid clamping structure through the hinge shaft 123. In conjunction with the screw transmission mechanism of the lifting load-bearing arm 13, the rotational force input by the operating handle 15 is converted into the vertical lifting displacement of the door leaf, realizing seamless connection of power transmission. Moreover, the door leaf moves up and down within the limitation range of the hinge shaft 123, which not only realizes the flexible rotation of the door leaf, but also enhances the fit between the door leaf and the door frame, improves the connection strength between the door leaf and the door frame, and avoids the overall loosening of the lifting hinge.

Claims

1. A novel lifting hinge mechanism, characterized in that: It includes an operating handle (15), a door frame hinge assembly (11), a door leaf hinge assembly (12), a lifting load-bearing arm (13), and a transmission assembly (14). The door frame hinge assembly (11) is connected to the door frame, the door leaf hinge assembly (12) is connected to the door leaf, the door frame hinge assembly (11) is connected to the door leaf hinge assembly (12), the lifting load-bearing arm (13) is connected to the door frame hinge assembly (11), the lifting load-bearing arm (13) is connected to the transmission assembly (14), and the transmission assembly (14) is connected to the operating handle (15).

2. The novel lifting hinge mechanism according to claim 1, characterized in that: The door frame hinge assembly (11) includes a first fixed base plate (111), on which a first fixed upright plate (112) and a second fixed upright plate (113) are provided, and the first fixed upright plate (112) and the second fixed upright plate (113) are symmetrically arranged.

3. The novel lifting hinge mechanism according to claim 1, characterized in that: The door hinge assembly (12) includes a second fixed base plate (121), on which a third fixed upright plate (122) is provided. The third fixed upright plate (122) is connected to the first fixed upright plate (112) and the second fixed upright plate (113) via a hinge shaft (123).

4. The novel lifting hinge mechanism according to claim 1, characterized in that: The transmission assembly (14) includes a commutator (141), the input shaft of which is connected to the operating handle (15), the output shaft of which is connected to one end of the transmission rod (142), the other end of which is connected to one end of the transmission shaft (143), and the other end of the transmission shaft (143) is connected to the input end of the lifting arm (13).

5. The novel lifting hinge mechanism according to claim 1, characterized in that: The lifting support arm (13) is mounted on the door leaf via a support arm base (131). The support arm base (131) is provided with a first bearing seat (132) and a second bearing seat (133). A rotary shaft (134) is provided between the first bearing seat (132) and the second bearing seat (133). A threaded rod (135) is provided at one end of the rotary shaft (134). A screw nut (137) meshes with the outside of the threaded rod (135). A copper sleeve (136) is provided between the screw nut (137) and the second bearing seat (133). A first gear (138) is provided on the rotary shaft (134). The first gear (138) meshes with a second gear (1311). The second gear (1311) is located at the output end of the transmission shaft (143).

6. The novel lifting hinge mechanism according to claim 5, characterized in that: A copper plate (139) and a partition plate (1310) are provided between the threaded rod (135) and the hinge shaft (123), with the copper plate (139) positioned above the partition plate (1310).

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